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Treatment process and device for oil-water well fractured and acidified flowback liquid

A technology of processing equipment and processing technology, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of cumbersome and complicated flowback fluid, pollution, waste, etc., and achieve the effect of both economic and social benefits

Active Publication Date: 2013-09-04
北京惠博普能源技术有限责任公司 +1
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Problems solved by technology

[0004] The purpose of the present invention is to propose a treatment process for oil-water well fracturing and acidification flowback fluid, aiming at solving or slowing down the problems in the prior art that the treatment of flowback fluid is complicated, easy to cause pollution, waste, etc.;

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  • Treatment process and device for oil-water well fractured and acidified flowback liquid
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  • Treatment process and device for oil-water well fractured and acidified flowback liquid

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] Such as figure 1 , figure 2 with image 3 As shown, an oil-water well fracturing and acidizing flowback fluid treatment process includes the following steps:

[0035] (1) Remove sand and filter the flowback liquid;

[0036] (2) Adjust the pH of the filtered flowback liquid to neutrality;

[0037] (3) Separate the flowback liquid from gas to liquid;

[0038] (4) Centrifuge the degassed flowback liquid, and collect the centrifuged oil-water mixture.

[...

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Abstract

The invention provides a treatment process for oil-water well fractured and acidified flowback liquid. The operation steps of degritting, filtration, pH regulation, gas-liquid separation, centrifugation and the liker are carried out on the flowback liquid, the initial flowback liquid can be treated to be in the degree of entering an oilfield sewage system, impacts cannot be caused to an existing sewage system, deacidification, degritting and dewatering can also be carried out on subsequent flowback liquid, and the needs of entering a crude oil output system are met. Meanwhile, the invention further provides a treatment device for the oil-water well fractured and acidified flowback liquid. The process procedures are achieved, the structure of the device is compact, the treatment device is vehicle-mounted movable equipment, and transportation and mounting in different places are convenient.

Description

technical field [0001] The invention relates to the field of chemical technology and equipment, in particular to an oil-water well fracturing and acidification flowback fluid treatment process, and the invention also relates to oil-water well fracturing and acidification flowback fluid treatment equipment. Background technique [0002] In the process of oil and gas field development, fracturing and acidizing are commonly used methods for increasing oil recovery. However, after fracturing and acidizing operations, the injected fracturing and acidizing fluids need to be drained back to the ground, and such fluids are collectively referred to as flowback fluids. The flowback process is divided into two stages. In the first stage, the oily wastewater with high acid and solid content is the main one. Each fracturing / acidizing well discharges hundreds to thousands of cubic meters of wastewater every day. The sewage is generally stored near the well site. Due to the characteristic...

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Application Information

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IPC IPC(8): E21B43/27
Inventor 黄松白明垠丁琳林洪科张维
Owner 北京惠博普能源技术有限责任公司
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